Earthquakes and Other Earth Movements |
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accompanied amplitude apparatus appear barometer Belluno beneath buildings calculated cause cavity centre coast Cobija column countries cracks curve depth destructive earthquakes determine direction distance districts disturbance earth pulsations earthquake motion effects elastic epicentrum eruption examples feet per second felt fissures fractures geological greater number ground Hakodate height horizontal hyperbola Illustrations indicate instance instruments intensity Iquique Japan large earthquakes Lisbon Mallet maximum miles moon mountains movements nature Neapolitan Neapolitan earthquake number of earthquakes observed obtained occurred ocean origin oscillations pendulum period Perrey phenomena plate portion pressure probably produced Professor propagated quakes records right angles Riobamba Robert Mallet rocks Rossi sea waves seismographs seismology Seismometer shaking SHELDON AMOS shock similar small earthquakes South America southern hemisphere spring sudden sun spots surface syzygies take place temperature tides tion Tokio Trans transverse tremors velocity velocity of propagation vibrations volcanic walls whilst Yokohama
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Page 117 - According to the observations made at Lisbon, in 1837, by Mr. Sharpe, the destroying effects of this earthquake were confined to the tertiary strata, and were most violent on the blue clay, on which the lower part of the city is constructed. Not a building, he says, on the secondary limestone or the basalt was injured.